它包括保护罩、旋转刷头、转轴、动力手柄和控制开关。
The electric toothbrush comprises a protecting cover, a rotary brush head, a rotating shaft, a power handle and a control switch.
它包括保护罩、旋转刷头、转轴、动力手柄和控制开关。
The electric toothbrush comprises a protecting cover, a rotary brush head, a rotating shaft, a power handle and a control switch.
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